When two of their Marshal friends are killed, the Rough Riders are sent to investigate. They have to find the killers in a ghost town where the houses and an old mine are interconnected by secret passages and tunnels.
Marshal Tim McCall
Marshal Buck Roberts
Marshal Sandy Hopkins
Josie Hall
Tom Cook
Judge Crail (as Murdock McQuarrie)
Henchman Gus
Ace, Chief Thug
Red Larkin
Luke Martin
